â¢ 1958 Code of Ethics for Government Service7 â¢ Senate Select Committee on Standards and Conduct (1964) â¢ Select Committee on ethics (1977) â¢ House Committee on Standards of Official Conduct (1967) â¢ Committee on Ethics (2011) â¢ Congressional Ethics Office (2008) â¢ Mechanism â censure
NH4I will completely dissolve in ammonium and iodide ions: of which I-is neutral and NH4+ is quite a weak acid (pKa = 9.25). (The molar standard solution of NH4I will have pH approx. 4.6).
It is the negative of the logarithm to base 10 of the activity of the hydrogen ion. Solutions with a pH less than 7 are acidic and solutions with a pH greater than 7 are alkaline or basic. Pure water is neutral, being neither an acid nor a base. Contrary to popular belief, the pH value can be less than 0 or greater than 14 for very strong acids and bases respectively.